'Shell-Shocked' crabs can feel pain too
- Sahara case: Hearing deferred in SC, Subrata Roy to remain in jail
- Purnia rally: Modi takes a dig at Nitish, says his PM dream was reason for break up of alliance
- Still no sign of Malaysia Airlines jet lost in "unprecedented mystery"
- DMK denies ticket to Alagiri; Raja, Maran get renomination
- Coal scam: SC directs CBI to file five charge sheets by Mar 28
Next time you are plunging live crabs into a simmering pot, think again! Scientists have proven that crabs and other crustaceans do feel pain, and are able to recall an unpleasant experience and take action to avoid it happening again.
The latest study by Professor Bob Elwood and Barry Magee from Queen's School of Biological Sciences looked at the reactions of common shore crabs to small electrical shocks, and their behaviour after experiencing those shocks. Elwood's previous research showed that prawns and hermit crabs respond in a way consistent with pain.
"The experiment was carefully designed to distinguish between pain and a reflex phenomenon known as nociception. The function of pain is to aid future avoidance of the pain source, whereas nociception enables a reflex response that provides immediate protection but no awareness or changes to long-term behaviour," Elwood said in a statement. This latest study showed that shore crabs are willing to trade something of value to them - in this case a dark shelter to avoid future electric shock. Ninety crabs were each introduced individually to a tank with two dark shelters. On selecting their shelter of choice, some of the crabs were exposed to an electric shock. After some rest time, each crab was returned to the tank.
Most stuck with what they knew best, returning to the shelter they had chosen first time around, where those that had been shocked on first choice again experienced a shock.
When introduced to the tank for the third time, however, the vast majority of shocked crabs now went to the alternative safe shelter. Those not shocked continued to use their preferred shelter."Having experienced two rounds of shocks, the crabs learned to avoid the shelter where they received the shock. They were willing to give up their hideaway in order to avoid the source of their probable pain," said Elwood. Elwood says that his research highlights the need to investigate how crustaceans used in food industries, such as crabs, prawns and lobsters, are treated.
- Terror accused wrongly jailed for 14 yrs, NHRC notices to Home Ministry, police
- SP hints no candidates against Sonia, Rahul
- In Hills, BJP gains GJM edge
- Delhi Police forms patrol teams to check pick-pocketing in Metro
- Two months to go and EC receives myriad complaints
- Maharashtra hailstorm hits crop worth Rs 5,000 cr
- AAP workers stage protest outside Kejriwal’s residence over ticket distribution
- BJP boycotts NDTV over news gaffe | The Indian Express
- Out of the promised 50,000 homes for the poor, not even 50 constructed in Gujarat by BJP: Kejriwal
- BJP complains to EC against Rahul over RSS remarks, seeks derecognition of Congress